Inferior Alveolar Nerve Lateralization Surgery for Implant Installation in Atrophic Posterior Mandible With Accessory Mental Foramen: A Challenge for the Usual Technique.

ABSTRACT: Implantology allows edentulous patients to smile and chew with confidence. However, the atrophy at posterior region of the mandible is still a challenge due the presence of the inferior alveolar nerve (iAN). The options of restoration with oral implants in this area with great atrophies are few and hazardous. The possibilities are: bone grafting, short implants, which are not always possible. So, the solution falls on the techniques of inferior alveolar nerve lateralization (IANL) or transposition. The knowledge of the anatomy and path of the IAN is decisive in this type of surgery. But anatomical variations may occur. Like the presence of an accessory mental foramen. This clinical study will present a relatively rare case of the occurrence of an accessory mental foramen that obliged to change the technique of iAN lateralization to contour this anatomical variance and install oral implants, maintaining the integrity of the iAN bundle.

Transconjunctival Surgical Access With Modified Aesthetic Lateral Canthotomy.

ABSTRACT: Displaced fractures of the zygomatic bone that require surgical treatment are accessed transcutaneously but these accesses to the skin can cause a hypertrophy scar in patients with this predisposition. This paper indicates a modification in the lateral canthotomy that aim to minimize the hypertrophic scar in the treatment of zygomatic fracture.

Submental Intubation in Cases of Panfacial Fractures: A Retrospective Study.

Surgical treatment of panfacial fractures usually requires intraoperative temporary occlusion of the teeth and simultaneous access to the nasal pyramid. In such cases, the standard method of airway management is to perform a tracheostomy, but this may be associated with a significant number of perioperative and late complications. This study aimed to determine if submental endotracheal intubation (SEI) is a viable alternative to tracheostomy, especially when short-term postoperative control of the airway is foreseen. This was an observational retrospective study, carried out between 2012 and 2014, which involved 32 consecutive patients who sustained panfacial fractures and were surgically treated during a 3-year period in a level I trauma center hospital. Only those who required SEI were included in the sample. Four cases were excluded because of incomplete registries, follow-up period less than 4 months after hospital discharge, or other unrelated complications. The medical charts of all patients involved in the sample were carefully reviewed in order to qualify and quantify perioperative and postoperative complications related to anesthetic management. We hypothesized that SEI would not interfere with the surgical procedures and would present less morbidity and reduced complication rates. Twenty-eight patients, 24 male and 4 female, met all the inclusion criteria. The mean age was 29.5 ± 9.05 years (range, 18-56 years). The mean duration time of surgery was 8.07 ± 4.0 hours (range, 4-16 hours). There were no perioperative complications. Postoperatively, only 1 patient (3.57%) experienced a cutaneous infection at the submental region, which was easily treated. Additionally, only 1 case (3.57%) of hypertrophic scar was reported. SEI appears to be a safe, simple, and effective technique of immediate perioperative airway management in selected cases of panfacial fractures.

Influence analysis of cleft type and supernumerary teeth eruption in the prognosis of bone graft in patients with cleft palate.

OBJECTIVE: The aim of this study was to investigate the influence of cleft type and supernumerary tooth eruption on the treatment of palatal clefts with alveolar bone grafts. MATERIALS AND METHODS: In this article, medical records of 40 patients with palatal clefts and associated supernumerary teeth who were treated with alveolar bone grafting in the Hospital for Craniofacial Anomalies Rehabilitation were assessed. The patients were studied to assess the influence of supernumerary teeth and the cleft severity on the prognosis of the alveolar bone graft. RESULTS: Forty medical records were included in the assessment. When the teeth in the cleft had an anatomic shape close to canine, we called them precanine. When they were very small or malformed, we called them anomalous lateral incisors. The teeth studied showed good prognoses and were more expressive in the preforaminal clefts (87.5%) than in the transforaminal ones (62.5%). Moreover, the transforaminal clefts presented a higher percentage in satisfactory and poor prognoses (37.5%). The authors found that supernumerary teeth influenced the maintenance of alveolar bone graft height and that transforaminal clefts presented a worse prognosis than preforaminal clefts.

Using conservative condylectomy for management of a large osteochondroma of the mandibular condyle with 6-year follow-up.

Osteochondroma is a hamartomatous proliferation of cartilaginous tissue, which is the most common benign tumor of the long bones, but is relatively rare in the maxillofacial region. Most cases of mandibular condylar osteochondroma manifest with facial asymmetry or malocclusion with limited temporomandibular joint movements. Several approaches for management of this lesion have been proposed, as conservative condylectomy technique. This procedure has been suggested a valid approach to minimize facial asymmetry, contributing to the recovery of occlusion associated with no local tumor recurrence, and without condylar reconstruction procedure. Therefore, this article aims to describe a clinical report of a true osteochondroma of the mandibular condyle in a 35-year-old patient who was successfully treated using conservative condylectomy procedure.

Using the "bottom-up and outside-in" sequence for panfacial fracture management: does it provide a clinical significance?

Panfacial fractures usually refer to simultaneous facial fractures, which affect the upper, middle, and lower thirds of the face. The management of panfacial fracture is complex because of the lack of reliable landmarks. Literature has shown many approaches for management of panfacial fractures. Every segment of bone has a precise function in the repair. Therefore, the "bottom-up and outside-in" sequence is the most widely used approach in the management of panfacial fractures. These facial fractures present remarkable challenges for both experienced and inexperienced surgeons. This article aimed to report a case of a panfacial fracture (mandibular condylar and symphysis fractures associated with an atypical Le Fort III fracture) in a 48-year-old man. The patient was successfully treated using bottom-up and outside-in sequence by accessing all facial injuries. Postoperatively, radiograph examination revealed good reduction and fixation of titanium plates, and physical examination revealed good functional and esthetic outcomes.

Incomplete mandibular fracture after lateralization of the inferior alveolar nerve for implant placement.

PURPOSE: The present case describes an inferior alveolar nerve lateralization for implant placement that caused mandible fracture a few days after surgery. CLINICAL REPORT: In this case, a 56-year-old female patient who had a severely atrophied jaw and showing bone height less than 7 mm from the bone crest and the mandibular canal was submitted to surgery lateralization of the inferior alveolar conducted with piezzo. Even with all postoperative care, the patient suffered an incomplete fracture of the mandible a few days after lateralization of the inferior alveolar nerve for implant placement. The patient was treated with soft diet and medications for pain and antibiotics, besides removing the implant associated with the fracture. CONCLUSION: It is suggested that this procedure may be conducted in 2 operative periods: firstly, the lateralization of the inferior alveolar; and secondly, after a period of 3 months, the implant placement in a situation of more bone stability.

Evaluation of deformation, mass loss, and roughness of different metal burs after osteotomy for osseointegrated implants.

PURPOSE: This study used bovine ribs to comparatively assess the deformation, roughness, and mass loss for 3 different types of surface treatments with burs, used in osteotomies, for the installation of osseointegrated implants. MATERIALS AND METHODS: The study used 25 bovine ribs and 3 types of helical burs (2.0 mm and 3.0 mm) for osteotomies during implant placement (a steel bur [G1], a bur with tungsten carbide film coating in a carbon matrix [G2], and a zirconia bur [G3]), which were subdivided into 5 subgroups: 1, 2, 3, 4, and 5, corresponding to 0, 10, 20, 30, and 40 perforations, respectively. The surface roughness (mean roughness [Ra], partial roughness, and maximum roughness) and mass (in grams) of all the burs were measured, and the burs were analyzed in a scanning electron microscope before and after use. Data were tabulated and statistically analyzed by use of the Kruskal-Wallis test, and when a statistically significant difference was found, the Dunn test was used. RESULTS: There was a loss of mass in all groups (G1, G2, and G3), and this loss was gradual, according to the number of perforations made (1, 2, 3, 4, and 5). However, this difference was not statistically significant (P < .05). Regarding the roughness, G3 presented an increase in Ra, partial roughness, and maximum roughness (P < .05) compared with G2 and an increase in Ra compared with G1. There was no statistically significant difference (P > .05) between G1 and G2. The scanning electron microscopy analysis found areas of deformation in all the 2.0-mm samples, with loss of substrates, and this characteristic was more frequent in G3. CONCLUSIONS: The 2.0-mm zirconia burs had a greater loss of substrates and abrasive wear in the cutting area. They also presented an increased roughness when compared with the steel and the tungsten carbide coating film in carbon matrix. There was no statistically significant difference (P < .05) between G1 and G2 in any mechanical test carried out.

Central granular cell odontogenic tumor of the maxilla.

The central granular cell odontogenic tumor (CGCOT) is a rare benign odontogenic neoplasm composed of varying amounts of large eosinophilic granular cells and apparently inactive odontogenic epithelium. It tends to occur as a small asymptomatic swelling in the posterior region of the mandible with nonaggressive appearance. We report an unusual case of CGCOT in the maxillary region with clinical features of malignancy. The patient underwent surgical treatment, and the 2-year follow-up revealed no signs of recurrence. Central granular cell odontogenic tumor is a very rare condition with few cases reported, especially in the maxillary region. This case highlights the possibility of aggressive behavior by these lesions.

Foreign body in preauricular region.

Foreign bodies, although they are often found throughout the body, to a lesser degree in the face, still constitute a diagnostic challenge for the trauma surgeon. Its removal means danger of damaging important facial anatomic structures, even if its exact position from the image data was known. So, the objective is to describe a clinical report of a patient (42 years of age, male sex) who experienced falling to the ground, attended by the Department of Surgery and Traumatology Bucco-Maxillo-Facial Surgery, Faculty of Dentistry of Araçatuba, São Paulo State University, and 2 days after the trauma, he reported difficulty in mouth opening and pain. After clinical evaluation, we observed the presence of injury in the left preauricular region already in the process of healing. During the intraoral physical examination, a limitation of the mouth opening was noted. Radiographic posteroanterior and profile of the face showed 2 radiopaque foreign bodies in the left side, lying apparently at the region of the mandibular condylar process. Under local anesthesia, foreign body removal was carried from there with access to it through the preexisting facial injury. Further clinical examinations showed an improvement in mouth opening, absence of pain complaints, and/or functional complaints.

Atypical dento-alveolar fracture fixed with screws: a technical note.

Dento-alveolar process fracture is an important and common event in the dental office practice usually managed under the well-established protocols, but sometimes this kind of lesion is evaluated in the hospital emergency rooms without attention to the dental injuries. In this type of trauma, the time between the injury and the definitive resolution is essential for the treatment success, usually 1 h in cases of dento-alveolar fractures (tooth and alveolar bone). This paper describes the management of a patient with unusual dento-alveolar fracture caused by gunshot and treated using screw fixation.

Tongue piercing: case report of a local complication.

Historically, wearing adornments on pierced body parts has been associated with many cultures as manifestations of religious or cultural identities. Currently, its use has a broad acceptance among young people. The most common sites for piercings are the tongue and lower lip in the oral cavity. Several complications may be associated with this practice with the most frequently observed being halitosis, periodontitis, tooth fracture, glossitis, and the formation of abscesses. This paper is a case report of a patient who had a complication from a piercing on the tongue located under the overlying mucosa. It also suggests a local habit was a possible initiator of this complication.

Severe hemorrhage during an incisional biopsy: a report of a case.

BACKGROUND: Surgical procedures under local anesthesia are routinely employed by the dentist and are susceptible to significant complications which demand immediate care from the dental professional. REPORT: This report presents a case of severe arterial hemorrhage during a simple removal of a lesion during an incisional biopsy. SUMMARY: In the event of severe arterial hemorrhage in a conventional dental office, manual compression for containing the hemorrhage and use of an adequate light source to correctly visualize the origin of the bleeding is recommended. If visible, the dental surgeon must attempt to perform vascular ligature or an occlusive suture. If the hemorrhage cannot be controlled after these measures, the patient must be transported to a hospital while continuing local compression during transit.

Mandibular fracture reduction without intraoperative intermaxillary fixation: a technique using two modified reduction forceps.

This case report demonstrates a technique that is useful for precompressing mandibular fractures and obtaining anatomical reduction of the fracture edges without the use of peroperative intermaxillary fixation (IMF) in a mandibular fracture by using two modified reduction forceps. The first forcep is positioned at the inferior mandibular border and the other in the neutral zone where it is an ideal location to place a fixation plate in mandibular fractures. This technique is indicated for the anatomic reduction in mandibular fractures of the partial dentate patient.

Epidemiology of mandibular fractures treated in a Brazilian level I trauma public hospital in the city of São Paulo, Brazil.

This article reviews cases of mandibular fractures treated at the Service of Oral and Maxillofacial Surgery of the Hospital Complex of Mandaqui (SUS/SP), which is a reference hospital complex for trauma in the northern area of the city of São Paulo, Brazil. Ninety-eight patients with mandibular fractures were seen at the hospital between January and December, 2001. Out of this total, 91 cases whose files were deemed adequate in terms of data accuracy and completeness were reviewed. The following data were collected for the study: age, gender, etiology, anatomical fracture site, treatment modality, relation to other facial bone fractures, hospitalization time and posttrauma complications. Motorcycle accident was the major cause of mandibular fractures followed by physical aggression and height fall. The mandibular anatomical sites of higher fracture incidence were: body, symphysis and condyle. The most commonly performed treatment modes were conservative approach or open reduction and intraosseous fixation. In conclusion, motorcycle accidents were associated with a larger number of facial fractures and most predominantly affect 21-30 year-old males. On the average, motor vehicle accident victims had more (and more severe) fractures than physical aggression victims. Complications were mostly associated with angle fractures and hospitalization period. Polytraumatized patients presented greater morbidity for complications.

Positioning of the knot in the steel wire in relation to the tooth and the Erich bars: technical note

Erich bar is a basic techniquefor restoring occlusal alignment in patients with facial fractures.Although this method is used worldwide, there is no description of what is the best way to stabilize the bar that should be anchored tooth to tooth with steel wire. We describe the method of stabilizing the bar of current use in our Service. We indicate the use of this technique because it stabilizes the bar and, in our opinion, it reduces the need to twist the knots during the patient's return(AU)

The use of a bite fork to help mobilize the maxilla after downfracture during the Le Fort I osteotomy. A technical note.

INTRODUCTION: The Le Fort I osteotomy is indicated to reposition the maxilla in the surgical correction of dentofacial deformities. Although it is a known surgical step, like any surgical procedure, it can have complications and difficulties; among these, the initial mobility of the jaw is very common after completing all corticotomies. METHODS: The authors present a technique in which the bite fork is used as an auxiliary tool in maxilla downfracture, especially in cases of maxillary impaction where vertical space is created on the walls of the corticotomy. FINDINGS: As the bite fork acts as a scraper with a long leverage arm, an advantage would be the better distribution of forces along the corticotomy, minimizing the risk of bad fracture and facilitating maxillary downfracture movement.

Management of locally aggressive mandibular tumours using a gas combination cryosurgery.

This study evaluated the results of curettage followed by cryosurgery using a combination of propane, butane, and isobutane gas for several benign but locally aggressive bone tumours on the mandible. Twenty-nine patients (16 men and 13 women) participated in the study. Patient ages ranged from 6 to 87 years (mean, 23.72 years). Before enucleation and cryosurgery, some patients received prior treatment consisting of marsupialisation to decrease tumour size. Twenty-seven of the 29 patients (93.10%) showed no evidence of clinical or radiographic recurrence after treatment through enucleation and cryosurgery. Wound dehiscence, which was observed in all cases, healed by second intention. The average follow-up period was 70.55 months (range, 53-120 months). These results suggest that enucleation followed by cryosurgery is an effective therapy for managing locally aggressive mandible tumours. In addition, this treatment is a less expensive intervention than more radical procedures.

Ultrasonographic evaluation of intramandibular ameloblastoma.

Ultrasonography (US) is the diagnostic tool of choice for evaluating soft tissue lesions in the head and neck region. It is an economic, noninvasive, easily performed exam and provides real-time images, without the exposure to ionizing radiation, and contrast media is not required. It is usually believed that bone tissue constitutes an obstacle for its utilization, due to the reflection of sonographic waves. A case of mandibular intraosseous cystic pathology is reported, with utilization of US for evaluating the content of the lesion and planning the surgical procedure.

Fratura zigomática tratada com fixação em ponto único (single point) / Zigomatic fracture treated with single point

Objetivo: Relatar um caso de fixação de zigoma em ponto único "single point". Relato do caso: Paciente do gênero masculino, 58 anos, saudável, pardo, foi encaminhado ao Pronto Socorro Municipal do município de Osasco/SP relatando ter sido assaltado, sofrendo trauma facial. Ao exame físico específico observou-se perda de projeção zigomática direita, degrau palpável na sutura fronto zigomática, degrau mínimo no rebordo infra orbital e movimentação ocular normal, sem perda de sensibilidade na porção infra orbital. O paciente foi informado do diagnóstico e necessidade de tratamento cirúrgico. Após exames laboratoriais e consentimento, foi submetido a procedimento composto por: acesso supratarsal, exposição da fratura, redução, checagem da projeção e fixação utilizando miniplaca 2.0 mm. Procedeu-se a nova checagem da posição do zigoma onde verificou-se a resolução do degrau na margem infraorbital. No controle pós-operatório, observou-se abertura bucal normal e restauração da projeção zigomática. Conclusão: Quando corretamente indicadas, as fixações em ponto único trazem benefícios como menores custos, menor morbidade, melhora da estética facial e redução do risco de ocorrer lesões sensoriais e o incômodo quando são utilizadas as miniplacas e parafusos.

Aim: To report a case of single-point zygoma fixation. Case report: A 58-year-old male, healthy, brown patient was referred to the Municipal Emergency Room in the city of Osasco / SP, reporting that he had been assaulted, suffering facial trauma. At the specific physical examination, there was loss of right zygomatic projection, palpable step in the zygomatic frontal suture, minimal step in the infraorbital border and normal ocular movement, without loss of sensitivity in the infra-orbital portion. The patient was informed of the diagnosis and the need for surgical treatment. After laboratory tests and consent, the patient was submitted to a procedure consisting of: supratarsal access, fracture exposure, reduction, check of the projection and fixation using mini-plate 2.0 mm. A new check of the zygoma position was performed, where the resolution of the step in the infraorbital margin was verified. Postoperative control revealed a normal oral opening and restoration of the zygomatic projection. Conclusion: When correctly indicated, single-point fixations bring benefits such as lower costs, lower morbidity, improved facial aesthetics and reduced risk of sensory lesions, and discomfort when using miniplates and screws.